Move renderer plugin code into a new component (re-land)

chrome/renderer/plugins/plugin_placeholder.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_RENDERER_PLUGINS_PLUGIN_PLACEHOLDER_H_
-#define CHROME_RENDERER_PLUGINS_PLUGIN_PLACEHOLDER_H_
-
-#include "chrome/renderer/plugins/webview_plugin.h"
-#include "content/public/common/webplugininfo.h"
-#include "content/public/renderer/context_menu_client.h"
-#include "content/public/renderer/render_process_observer.h"
-#include "content/public/renderer/render_view_observer.h"
-#include "third_party/WebKit/public/web/WebPluginParams.h"
-#include "webkit/renderer/cpp_bound_class.h"
-
-struct ChromeViewHostMsg_GetPluginInfo_Status;
-
-namespace content {
-struct WebPluginInfo;
-}
-
-// Placeholders can be used if a plug-in is missing or not available
-// (blocked or disabled).
-class PluginPlaceholder : public content::RenderViewObserver,
-                          public content::RenderProcessObserver,
-                          public webkit_glue::CppBoundClass,
-                          public WebViewPlugin::Delegate,
-                          public content::ContextMenuClient {
- public:
-  // Creates a new WebViewPlugin with a MissingPlugin as a delegate.
-  static PluginPlaceholder* CreateMissingPlugin(
-      content::RenderView* render_view,
-      WebKit::WebFrame* frame,
-      const WebKit::WebPluginParams& params);
-
-  static PluginPlaceholder* CreateErrorPlugin(
-      content::RenderView* render_view,
-      const base::FilePath& plugin_path);
-
-  static PluginPlaceholder* CreateBlockedPlugin(
-      content::RenderView* render_view,
-      WebKit::WebFrame* frame,
-      const WebKit::WebPluginParams& params,
-      const content::WebPluginInfo& info,
-      const std::string& identifier,
-      const string16& name,
-      int resource_id,
-      const string16& message);
-
-#if defined(ENABLE_MOBILE_YOUTUBE_PLUGIN)
-  // Placeholder for old style embedded youtube video on mobile device. For old
-  // style embedded youtube video, it has a url in the form of
-  // http://www.youtube.com/v/VIDEO_ID. This placeholder replaces the url with a
-  // simple html page and clicking the play image redirects the user to the
-  // mobile youtube app.
-  static PluginPlaceholder* CreateMobileYoutubePlugin(
-       content::RenderView* render_view,
-       WebKit::WebFrame* frame,
-       const WebKit::WebPluginParams& params);
-#endif
-
-  WebViewPlugin* plugin() { return plugin_; }
-
-  void set_blocked_for_prerendering(bool blocked_for_prerendering) {
-    is_blocked_for_prerendering_ = blocked_for_prerendering;
-  }
-
-  void set_allow_loading(bool allow_loading) { allow_loading_ = allow_loading; }
-
-  void SetStatus(const ChromeViewHostMsg_GetPluginInfo_Status& status);
-
-#if defined(ENABLE_PLUGIN_INSTALLATION)
-  int32 CreateRoutingId();
-#endif
-
-#if defined(ENABLE_MOBILE_YOUTUBE_PLUGIN)
-  // Whether this is a youtube url.
-  static bool IsYouTubeURL(const GURL& url, const std::string& mime_type);
-#endif
-
- private:
-  // |render_view| and |frame| are weak pointers. If either one is going away,
-  // our |plugin_| will be destroyed as well and will notify us.
-  PluginPlaceholder(content::RenderView* render_view,
-                    WebKit::WebFrame* frame,
-                    const WebKit::WebPluginParams& params,
-                    const std::string& html_data,
-                    const string16& title);
-
-  virtual ~PluginPlaceholder();
-
-  // WebViewPlugin::Delegate methods:
-  virtual void BindWebFrame(WebKit::WebFrame* frame) OVERRIDE;
-  virtual void WillDestroyPlugin() OVERRIDE;
-  virtual void ShowContextMenu(const WebKit::WebMouseEvent&) OVERRIDE;
-
-  // content::RenderViewObserver methods:
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  // content::RenderProcessObserver methods:
-  virtual void PluginListChanged() OVERRIDE;
-
-  // content::ContextMenuClient methods:
-  virtual void OnMenuAction(int request_id, unsigned action) OVERRIDE;
-  virtual void OnMenuClosed(int request_id) OVERRIDE;
-
-  // Replace this placeholder with a different plugin (which could be
-  // a placeholder again).
-  void ReplacePlugin(WebKit::WebPlugin* new_plugin);
-
-  // Hide this placeholder.
-  void HidePlugin();
-
-  // Load the blocked plugin.
-  void LoadPlugin();
-
-  // Javascript callbacks:
-  // Load the blocked plugin by calling LoadPlugin().
-  // Takes no arguments, and returns nothing.
-  void LoadCallback(const webkit_glue::CppArgumentList& args,
-                    webkit_glue::CppVariant* result);
-
-  // Hide the blocked plugin by calling HidePlugin().
-  // Takes no arguments, and returns nothing.
-  void HideCallback(const webkit_glue::CppArgumentList& args,
-                    webkit_glue::CppVariant* result);
-
-  // Opens chrome://plugins in a new tab.
-  // Takes no arguments, and returns nothing.
-  void OpenAboutPluginsCallback(const webkit_glue::CppArgumentList& args,
-                                webkit_glue::CppVariant* result);
-
-  void DidFinishLoadingCallback(const webkit_glue::CppArgumentList& args,
-                                webkit_glue::CppVariant* result);
-
-  void OnLoadBlockedPlugins(const std::string& identifier);
-  void OnSetIsPrerendering(bool is_prerendering);
-#if defined(ENABLE_PLUGIN_INSTALLATION)
-  void OnDidNotFindMissingPlugin();
-  void OnFoundMissingPlugin(const string16& plugin_name);
-  void OnStartedDownloadingPlugin();
-  void OnFinishedDownloadingPlugin();
-  void OnErrorDownloadingPlugin(const std::string& error);
-  void OnCancelledDownloadingPlugin();
-#endif
-
-#if defined(ENABLE_MOBILE_YOUTUBE_PLUGIN)
- // Check whether the url is valid.
-  static bool IsValidYouTubeVideo(const std::string& path);
-
-  // Opens a youtube app in the current tab.
-  void OpenYoutubeUrlCallback(const webkit_glue::CppArgumentList& args,
-                              webkit_glue::CppVariant* result);
-#endif
-
-  void SetMessage(const string16& message);
-  void UpdateMessage();
-
-  WebKit::WebFrame* frame_;
-  WebKit::WebPluginParams plugin_params_;
-  WebViewPlugin* plugin_;
-
-  content::WebPluginInfo plugin_info_;
-
-  string16 title_;
-  string16 message_;
-
-  // We use a scoped_ptr so we can forward-declare the struct; it's defined in
-  // an IPC message file which can't be easily included in other header files.
-  scoped_ptr<ChromeViewHostMsg_GetPluginInfo_Status> status_;
-
-  // True iff the plugin was blocked because the page was being prerendered.
-  // Plugin will automatically be loaded when the page is displayed.
-  bool is_blocked_for_prerendering_;
-  bool allow_loading_;
-
-#if defined(ENABLE_PLUGIN_INSTALLATION)
-  // |routing_id()| is the routing ID of our associated RenderView, but we have
-  // a separate routing ID for messages specific to this placeholder.
-  int32 placeholder_routing_id_;
-#endif
-
-  bool hidden_;
-  bool has_host_;
-  bool finished_loading_;
-  string16 plugin_name_;
-  std::string identifier_;
-  int context_menu_request_id_;  // Nonzero when request pending.
-
-  DISALLOW_COPY_AND_ASSIGN(PluginPlaceholder);
-};
-
-#endif  // CHROME_RENDERER_PLUGINS_PLUGIN_PLACEHOLDER_H_